The cost to plumb a bathroom depends on the size of the bathroom, whether it’s a new installation or a renovation, the number of fixtures, and the complexity of pipework. Labour rates and local pricing also make a noticeable difference.
Below is a realistic breakdown to help you understand what you’re paying for.
Average cost overview
For a standard bathroom, plumbing costs usually fall within these ranges:
- Basic bathroom plumbing: £1,500 – £3,000 (€1,700 – €3,400)
- Mid-range bathroom plumbing: £3,000 – £5,000 (€3,400 – €5,700)
- High-end or complex bathroom: £5,000 – £8,000+ (€5,700 – €9,000+)
These figures cover plumbing work only, not tiles, fittings, or electrical work unless stated.
Plumber labour rates
Most plumbers charge in one of these ways:
- Hourly rate: £40 – £80 per hour (€45 – €90)
- Day rate: £300 – £600 (€350 – €700)
- Fixed price: Common for full bathroom plumbing jobs
A full bathroom plumbing job usually takes 5 to 10 working days, depending on layout changes and access.
Cost by individual bathroom fixtures
Here’s a typical per-item breakdown:
- Toilet installation: £150 – £400 (€170 – €450)
- Sink and tap: £120 – £350 (€140 – €400)
- Shower installation: £500 – £1,500 (€570 – €1,700)
- Bath installation: £600 – £2,000 (€700 – €2,300)
- Radiator or towel rail: £200 – £500 (€230 – €570)
- Waste and trap connections: £50 – £150 (€60 – €170) each
If pipe routes stay the same, costs stay lower.
New bathroom vs renovation costs
New bathroom plumbing
- Requires fresh water supply lines
- New waste and soil pipes
- Possible floor or wall cutting
Cost: £3,500 – £7,000+
Bathroom renovation plumbing
- Uses existing pipework where possible
- Some rerouting may be needed
Cost: £1,500 – £4,500
New installations are always more expensive due to extra materials and labour time.
Factors that increase plumbing costs
Several things push the price up:
- Moving the toilet or shower location
- Concrete floors instead of wooden floors
- Low water pressure needing pumps
- Older properties with outdated pipework
- Wall-hung toilets and concealed cisterns
- Multiple bathrooms done at the same time
Hidden pipe damage found after stripping old fittings can also add to the bill.
Materials included vs excluded
Most plumbers include:
- Pipes and connectors
- Valves and fittings
- Waste and soil pipe connections
Often excluded unless agreed:
- Bathroom fixtures (toilet, bath, shower)
- Pumps or pressure systems
- Tiling repairs
- Decorative finishes
Always ask for a written list of what’s included.
Ways to control plumbing costs
You can keep costs reasonable by:
- Keeping the existing layout
- Choosing standard fixtures
- Combining plumbing work with other renovations
- Booking work outside peak seasons
- Getting at least two detailed quotes
Clear planning saves both time and money.
Final takeaway
Plumbing a bathroom is a skilled job that directly affects water pressure, drainage, and long-term reliability. A low quote often means shortcuts, while a clear, itemised quote usually reflects proper workmanship.